code: def test_upper(value: str) -> bool:
      """Return true if the variable is uppercased."""
      return str(value).isupper()
  
imports: import operator
  import typing
  from collections import abc
  from numbers import Number
  from .runtime import Undefined
  from .utils import pass_environment
label_desc: Use image node_id 15 for calling a global function with example usage: test_upper(value) and returns: str